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| author | Richard Osborne <richard@xmos.com> | 2010-03-09 16:13:57 +0000 |
|---|---|---|
| committer | Richard Osborne <richard@xmos.com> | 2010-03-09 16:13:57 +0000 |
| commit | c5ff63d70fbb220fc2c80af39eef987c4738f797 (patch) | |
| tree | 4b210cf7d6bfc0a58a9514434dbeb59abbd7cabe /llvm/lib/Target/XCore/XCoreISelLowering.cpp | |
| parent | f4e76cf44de41aba7c55e21be38b261eb586a0cf (diff) | |
| download | bcm5719-llvm-c5ff63d70fbb220fc2c80af39eef987c4738f797.tar.gz bcm5719-llvm-c5ff63d70fbb220fc2c80af39eef987c4738f797.zip | |
Canonicalize ladd constant to RHS.
llvm-svn: 98058
Diffstat (limited to 'llvm/lib/Target/XCore/XCoreISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/XCore/XCoreISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/XCore/XCoreISelLowering.cpp b/llvm/lib/Target/XCore/XCoreISelLowering.cpp index e59b18cd2a3..d8cbd037cb2 100644 --- a/llvm/lib/Target/XCore/XCoreISelLowering.cpp +++ b/llvm/lib/Target/XCore/XCoreISelLowering.cpp @@ -1105,6 +1105,10 @@ SDValue XCoreTargetLowering::PerformDAGCombine(SDNode *N, ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1); EVT VT = N0.getValueType(); + // canonicalize constant to RHS + if (N0C && !N1C) + return DAG.getNode(XCoreISD::LADD, dl, DAG.getVTList(VT, VT), N1, N0, N2); + // fold (ladd 0, 0, x) -> 0, x & 1 if (N0C && N0C->isNullValue() && N1C && N1C->isNullValue()) { SDValue Carry = DAG.getConstant(0, VT); |
